if (typeof(location.rewriteURL) == "undefined") {
	location.rewriteURL = function(obj, sid, url) {
		if (typeof(url)=="undefined") var url = url = location.href;
		for (k in obj) {
			var v = obj[k];
			if (typeof(sid)!="undefined" && sid!=false && sid!="") var n = sid+"_"+k; 
			else var n = k;
			if (new RegExp('([\\?&])'+n+'=.*?($|[&#])','ig').test(url)) {
				var url = url.replace(new RegExp("([\\?&])"+n+"=[^&#]*",'ig'), ((v!="")?"$1"+n+"="+v:""));
			} else if (v != "") {
				var result = /(^.*?)($|[#].*)/i.exec(url);
				url = result[1] + ((!/\?/i.test(url))?'?':'&') + n+"="+v + result[2];
			}
		}
		return url; 
	}
}

$(function ($) {
	$(".js_rv_forward").change(function(){
		location = location.rewriteURL({
			mode: $(this).val()
,			title: ""
,			id: ""
		});
	});
});